Tesla started charging more for HW2.5 cars than HW3 cars on April 13th, 2021. Here's the wayback machine before April 13, 2021, and then after, where the price goes from $1500 for all cars to $1500/$2500.:
Upgrade your infotainment system for a more advanced and smoother user experience.
web.archive.org
Upgrade your infotainment system for a more advanced and smoother user experience.
web.archive.org
The reason for the MCU1/HW3 situation is people that actually bought FSD and had gotten a "free" HW3 upgrade before the MCU1 situation. This is a hack Tesla is doing to say that if you paid for FSD, the upgrade is $1,500, but if you didn't pay for FSD, it's $2,500. I promise you that even if you have HW2.5 and you ask for the MCU2 upgrade, if you have FSD on the car, they won't charge you the $1000 extra, because if they did, you'd just go "give me my HW3 upgrade first for free, then do the MCU2."
All of this is exactly what you should bring to a judge next to Tesla's own page that says "All cars have all hardware needed for FSD
CAPABILITY." How is the latter true if Tesla charges differently based on what HW the car was produced with?